Fundamental similarity due to descent from a common ancestor is called

The development of_ factored in the development of complex organisms.

Which of these organisms have the greatest amount of cell specialized

Check all that apply diatoms are marine algae that have a shell made of silica, what are some of the uses of the silica shell after the diatoms die? 1.the shells make up the diatomaceous earth used in filters 2.it can be used as an ingredient in abrasives 3.they are used in food products 4.the shells can be used in some insulating materials